Unicellular eukaryotes are included in which of the following kingdoms?

What are the similarities between Entamoeba and Plasmodium?

Describe briefly the four major groups of Protozoa.

Select the incorrect statement.

Two species of Amoeba $X$ and $Y$ were kept in fresh water and adapted to it. Species $X$ developed a contractile vacuole. When both were transferred to sea water and adapted,both $X$ and $Y$ lost their contractile vacuole. From these observations,we conclude that:

When freshwater protozoans possessing contractile vacuoles are placed in a beaker containing seawater,the vacuoles will: